250w HPS Club And Help Guide

brettsog

Well-Known Member
Thank you B-sog

You are correct in all aspects, and it was something that I had given consideratoin too, and opened all the windows in the house and got a massive fan circulating air round the house. But like you say, today in particular, it's foggy as buggery, so even the outside air must be humid.

I'll whack the hygro outside the tent for half hour, and see what's up. Maybe a trip to argos for a dehumidifier
glad to be of help man. and i certainly notice when its humid outside, it makes me sweat even when its cold.


on a different note i have just stuck an ak47 auto seed into a soaked rockwool cube. i didnt do it justice the first time i grew it so im gonna try one in dwc as this is gonna be my last indoor grow. hopefully it comes together better and i get a better yeild from it.
 

Dr. Kundilini

Well-Known Member
i have found about 25-30% of wet weight is a good expectation, to only lose half the weight would be a miracle lol. so probably 10oz maybe. about 2 per plant. not bad. how big was your space?
My grow space is 2 ft. X 4 ft. with 5 ft. to the ceiling. It was very crowded. I trimmed the lower branches, "lollipop" I think some call it, and used MST to bend the terminal growth to protect it from the hot lamp. I was amazed at the green/fresh weight. I agree that it will be considerably less when dry and stems are removed. The 250 HPS out grew 475Watts of CFL lights, in both yield and quality. Growing is almost as much fun as smoking...already started a WW auto fem from Nirvana...she looks like she is on steroids...photos later.
 

Hettyman

Well-Known Member
cbtbudz, I'm not caught up on the abreveations...what is qp?
Here are a couple images of budz drying in a large cardboard box and a WW auto fem at 21 days (18/6), under a 125W CF L
I also wondered earlier, what a qp was, and then as I read your post, I instantly said to myself "quarter pound" obviously. Funny how my brain won't work to help me, but its a fucking top grade super computer whenever it want to help someone else :)
 

Hettyman

Well-Known Member
So I had a knock at the door earlier, peered out the curtains, saw a flat bed truck with gardening equipment and instantly knew what was happening, and went to the door:

Caller: "oh er, sorry mate, I could have sworn an old person lived here"
Me: "yeah my garden needs a trim, I'm a lazy fuck"

What I really wanted to say was:
"Yes, I live in a predominantly retired neighbourhood, and have let my garden overgrow just a little, but remaining neat, with symmetrical flower pots that still have blooms out of season, and an immaculately kept 12 year old Nissan Micra on the drive, with a traditional trilby hat on the rear shelf. This has been done on purpose in an attempt to slide under the radar so that should the police get a report of my activities, they will likely do a drive-by and decide 'bad info - retired occupant'...thank you for validating my efforts" :)
 

Hettyman

Well-Known Member
cbtbudz, I'm not caught up on the abreveations...what is qp?
Here are a couple images of budz drying in a large cardboard box and a WW auto fem at 21 days (18/6), under a 125W CFL
We always like pictures of budds in a box. It pretty packed in there, have you got some sort of air-flow for it?, don't want to get this far and end up with budd rot, belive me! :)
 

giggles26

Well-Known Member
Hey guys have any of you used a product called damp rid? I'm needing to lower my humidity down inside my tent. With lights on its 68% RH...Ah and they are flowering so I don't want that!

This product supposedly takes moisture out of the air and reduces humidity. I haven't got one yet but I am not wanting to spend 100+ on a dehumidifier. Let me know what you guys think.
 

Hettyman

Well-Known Member
Hey guys have any of you used a product called damp rid? I'm needing to lower my humidity down inside my tent. With lights on its 68% RH...Ah and they are flowering so I don't want that!

This product supposedly takes moisture out of the air and reduces humidity. I haven't got one yet but I am not wanting to spend 100+ on a dehumidifier. Let me know what you guys think.
If it's a little tub you put silicone crystals in, and then they soak the water out the air and into a container at the bottom, then I have just bought one, and will be able to give you a better answer in a couple of days. I put it in yesterday, and it did seem to drop the humidity a little, only 3-4%, but I only half filled it with crystals, scared of overloading. I will put the others in tommorrow when the lights come back on. Someone else of here swore by it, so i thought it was worth the few £ it cost.

I found opening the a couple of windows and having a fan move air round the house helped too, but in general the air is moist at the moment so only made another small difference.

I'm just hoping constant air flow will stop any real problems...seems ok so far, so fingers crossed
 

giggles26

Well-Known Member
If it's a little tub you put silicone crystals in, and then they soak the water out the air and into a container at the bottom, then I have just bought one, and will be able to give you a better answer in a couple of days. I put it in yesterday, and it did seem to drop the humidity a little, only 3-4%, but I only half filled it with crystals, scared of overloading. I will put the others in tommorrow when the lights come back on. Someone else of here swore by it, so i thought it was worth the few £ it cost.

I found opening the a couple of windows and having a fan move air round the house helped too, but in general the air is moist at the moment so only made another small difference.

I'm just hoping constant air flow will stop any real problems...seems ok so far, so fingers crossed
Yes hetty that's exactly what it is. I have tried opening windows and put 2 fans circulating air around and it has only dropped it like 4%. I'm just trying to avoid any problems now that I'm on the down hill slide of these babies. One of my skunks is growing like crazy. She grew another 2 inches today! I think she has more of the sativa pheno and skunk #2 aka shorty is more indica dominant.

I'm just trying to do what I can to keep them happy. Also has anyone had any false readings with a digital thermometer? Mine is saying it's 88 F in my tent but I can touch my cool tube right at the bulb and not hot and hold my hand at the canopy for over a min and doesn't affect me at all. I'm just beginning to wonder if my gauge is faulty or it's just the spot it is in?
 

Hettyman

Well-Known Member
Yes hetty that's exactly what it is. I have tried opening windows and put 2 fans circulating air around and it has only dropped it like 4%. I'm just trying to avoid any problems now that I'm on the down hill slide of these babies. One of my skunks is growing like crazy. She grew another 2 inches today! I think she has more of the sativa pheno and skunk #2 aka shorty is more indica dominant.

I'm just trying to do what I can to keep them happy. Also has anyone had any false readings with a digital thermometer? Mine is saying it's 88 F in my tent but I can touch my cool tube right at the bulb and not hot and hold my hand at the canopy for over a min and doesn't affect me at all. I'm just beginning to wonder if my gauge is faulty or it's just the spot it is in?
Again, having the exact same thinking with my hygro, and the probe placement. I have a fan blowng the air off the bulb, and can happily hold my hand within 2" without any discomfort, but at time my meter reads in the high twenties with the probe further away from the bulb then that. I read on another post that someone found they gave a bad reading if any light shines on them...but how he managed to get one in his grow room without gettng light on it, I couldn't figure
 

giggles26

Well-Known Member
Again, having the exact same thinking with my hygro, and the probe placement. I have a fan blowng the air off the bulb, and can happily hold my hand within 2" without any discomfort, but at time my meter reads in the high twenties with the probe further away from the bulb then that. I read on another post that someone found they gave a bad reading if any light shines on them...but how he managed to get one in his grow room without gettng light on it, I couldn't figure
Yea man I'm thinking I'm getting a false reading from light hitting it but I'm not sure. I guess the best thing to do is to use the hand test and watch the girls see how they react. I think as long as my gauge isn't reading in the high 90's I should be ok if the girls aren't showing any signs of stress.

What are you running your height at hetty? I'm at 6" now just do to the fact of diff canopy heights but that is getting better. Really wanting to try SCROG. What do you think the best height is? I know there is a lot that plays into it but on average do you think 6" is bad?
 

Hettyman

Well-Known Member
When I first started researching the 250 HPS, i found something that showed that they really tail off after 12", and anything under 8" is good. I've read ppl going as low as 2-3" with cool tubes and good conditions. I can keep it at 4" quite happily without burning. However, due to stonedness and being in a hurry, they circulating fans didn't come on this morning, and only had the extractor at the top of the tent on.... came home to some badly burnt girls...they didn't look happy...luckily they are in very early flower and only really "spares" so they have plemnty of time to recover na dhave no expectations.

Scrog sounds like the kiddy. I'm determined to drop my rotation to about one plant per month, but have 2 in scrogs, harvesting due to finish on alternate months..but we'll see
 

giggles26

Well-Known Member
I'm really wanting to try scrog. I'm trying to work on my perpetual grow. I'm keeping at 6" just to be safe so I don't pull a stoned moment lol. I did that once and my girls hated me. MJ is an amazing plant as how she can be almost completely dead and then produce an amazing crop.

Why are you wanting to drop your rotation?
 

georgyboy

Active Member
I have been wanting to set up two grow spaces but don't want to dish out much more cash. I came up with this way to ventilate two 3'x3'x5' tents, one which would hold my 250w and one that would hold ten 23w cfls, using my single 6" inline fan rated at 400 cfm and my one carbon filter. The filter has a capped end so I can't put it in the middle of a duct run. Instead I will build a small box that will hold the filter and the inline fan will pull through the filter and push through a short duct out the window. The box itself will have a 6" duct entrance. Here will be a 200cfm booster fan blowing into the box. The fan will be hooked to a y split. Each Y split will be connected to a duct that runs to each tent. The tents will have 10" passive intakes and small oscillating fans.
Dual Tent Plans.jpg
 

Dingus611

Member
Is anyone here running a 250w with a cooltube? Anyone know how much cfm I would need to adequately ventilate a 250w in a cooltube? I currently am running two 110cfm 120mm pc fans, I was hoping that just one of them ducted to the cooltube would be enough. That way I could be exhausting out of the cabinet directly as well as through the cooltube. I mainly use grasscity so my journal and stuff is on there, if anyone can help me out that would be fantastic. http://forum.grasscity.com/indoor-grow-journals/1114793-coco-coir-hempy-bucket-vs-dingus.html
 

SativaMe@420

Well-Known Member
If anybody in Nor-Cal is looking for cheap 250W HPS magnetic ballasts/fixtures Davis Waste Removal converted there shop lights to fluorescent and is now selling there used (but in good condition) 250W HPS magnetic fixtures (Multi-tap Compatible with 120/208/240/277 volt supply) for $20 each on Craigslist, they had 89 left when I bought mine, here's the link (-->CLICK HERE<--) Pic of fixture below:


Just wire a plug for the voltage you want and use as is or convert to remote ballast like I did, check it out:
100_2347.jpg
 
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